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[PATCH] genirq: i386 irq: Remove the msi assumption that irq == vector

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This patch removes the change in behavior of the irq allocation code when
CONFIG_PCI_MSI is defined.  Removing all instances of the assumption that irq
== vector.

create_irq is rewritten to first allocate a free irq and then to assign that
irq a vector.

assign_irq_vector is made static and the AUTO_ASSIGN case which allocates an
vector not bound to an irq is removed.

The ioapic vector methods are removed, and everything now works with irqs.

The definition of NR_IRQS no longer depends on CONFIG_PCI_MSI

[akpm@osdl.org: cleanup]
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rajesh Shah <rajesh.shah@intel.com>
Cc: Andi Kleen <ak@muc.de>
Cc: "Protasevich, Natalie" <Natalie.Protasevich@UNISYS.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Eric W. Biederman
2006-10-04 02:16:47 -07:00
committed by Linus Torvalds
parent 04b9267b15
commit ace80ab796
7 changed files with 51 additions and 193 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/asm-i386/hw_irq.h
-1
View File
@@ -28,7 +28,6 @@
extern u8 irq_vector[NR_IRQ_VECTORS];
#define IO_APIC_VECTOR(irq) (irq_vector[irq])
#define AUTO_ASSIGN -1
extern void (*interrupt[NR_IRQS])(void);
include/asm-i386/io_apic.h
-42
View File
@@ -12,46 +12,6 @@
#ifdef CONFIG_X86_IO_APIC
#ifdef CONFIG_PCI_MSI
static inline int use_pci_vector(void) {return 1;}
static inline void disable_edge_ioapic_vector(unsigned int vector) { }
static inline void mask_and_ack_level_ioapic_vector(unsigned int vector) { }
static inline void end_edge_ioapic_vector (unsigned int vector) { }
#define startup_level_ioapic startup_level_ioapic_vector
#define shutdown_level_ioapic mask_IO_APIC_vector
#define enable_level_ioapic unmask_IO_APIC_vector
#define disable_level_ioapic mask_IO_APIC_vector
#define mask_and_ack_level_ioapic mask_and_ack_level_ioapic_vector
#define end_level_ioapic end_level_ioapic_vector
#define set_ioapic_affinity set_ioapic_affinity_vector
#define startup_edge_ioapic startup_edge_ioapic_vector
#define shutdown_edge_ioapic disable_edge_ioapic_vector
#define enable_edge_ioapic unmask_IO_APIC_vector
#define disable_edge_ioapic disable_edge_ioapic_vector
#define ack_edge_ioapic ack_edge_ioapic_vector
#define end_edge_ioapic end_edge_ioapic_vector
#else
static inline int use_pci_vector(void) {return 0;}
static inline void disable_edge_ioapic_irq(unsigned int irq) { }
static inline void mask_and_ack_level_ioapic_irq(unsigned int irq) { }
static inline void end_edge_ioapic_irq (unsigned int irq) { }
#define startup_level_ioapic startup_level_ioapic_irq
#define shutdown_level_ioapic mask_IO_APIC_irq
#define enable_level_ioapic unmask_IO_APIC_irq
#define disable_level_ioapic mask_IO_APIC_irq
#define mask_and_ack_level_ioapic mask_and_ack_level_ioapic_irq
#define end_level_ioapic end_level_ioapic_irq
#define set_ioapic_affinity set_ioapic_affinity_irq
#define startup_edge_ioapic startup_edge_ioapic_irq
#define shutdown_edge_ioapic disable_edge_ioapic_irq
#define enable_edge_ioapic unmask_IO_APIC_irq
#define disable_edge_ioapic disable_edge_ioapic_irq
#define ack_edge_ioapic ack_edge_ioapic_irq
#define end_edge_ioapic end_edge_ioapic_irq
#endif
#define IO_APIC_BASE(idx) \
((volatile int *)(__fix_to_virt(FIX_IO_APIC_BASE_0 + idx) \
+ (mp_ioapics[idx].mpc_apicaddr & ~PAGE_MASK)))
@@ -219,6 +179,4 @@ extern int (*ioapic_renumber_irq)(int ioapic, int irq);
static inline void disable_ioapic_setup(void) { }
#endif
extern int assign_irq_vector(int irq);
#endif
include/asm-i386/mach-default/irq_vectors_limits.h
-5
View File
@@ -1,10 +1,6 @@
#ifndef _ASM_IRQ_VECTORS_LIMITS_H
#define _ASM_IRQ_VECTORS_LIMITS_H
#ifdef CONFIG_PCI_MSI
#define NR_IRQS FIRST_SYSTEM_VECTOR
#define NR_IRQ_VECTORS NR_IRQS
#else
#ifdef CONFIG_X86_IO_APIC
#define NR_IRQS 224
# if (224 >= 32 * NR_CPUS)
@@ -16,6 +12,5 @@
#define NR_IRQS 16
#define NR_IRQ_VECTORS NR_IRQS
#endif
#endif
#endif /* _ASM_IRQ_VECTORS_LIMITS_H */
include/asm-x86_64/io_apic.h
-2
View File
@@ -10,8 +10,6 @@
* Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar
*/
static inline int use_pci_vector(void) {return 0;}
#define APIC_MISMATCH_DEBUG
#define IO_APIC_BASE(idx) \